Re: why it stopped at Reduce phase?

[Otis Gospodnetic <ot...@yahoo.com>]

It appears that your hard disk is full on one of your 2 slaves, that is all.  If you are on UNIX/linux, type this at the prompt:
df

You should see 100% for the partition where you put HDFS.


Otis
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----- Original Message ----
> From: wangxiaowei <wa...@software.ict.ac.cn>
> To: core-user@hadoop.apache.org
> Sent: Tuesday, May 13, 2008 11:12:36 AM
> Subject: why it stopped at Reduce phase? 
> 
> hi all:
>    I uses two computers A and B as a hadoop cluster,A is JobTracker and 
> NameNode,both A and B are slaves.
> The input data size is about 80MB,including 100,000records. The job is to read 
> one record a time and find some useful content in it,and transmit it to reduce.
>    But when I submit it ,it just run map tasks,and the reduce task did not run 
> at all!This is the JobTacker`s log file:
> 2008-05-13 21:02:00,007 INFO org.apache.hadoop.mapred.TaskInProgress: Error from 
> task_200805132055_0001_m_000000_0: FSError: java.io.IOException: No space left 
> on device
> 2008-05-13 21:02:11,952 INFO org.apache.hadoop.mapred.TaskInProgress: Error from 
> task_200805132055_0001_m_000001_0: FSError: java.io.IOException: No space left 
> on device
> 2008-05-13 21:02:11,953 INFO org.apache.hadoop.mapred.TaskInProgress: Error from 
> task_200805132055_0001_m_000006_0: FSError: java.io.IOException: No space left 
> on device
>    I think it is something wrong with the configuration file,Can you give me 
> some suggestions?
>    Do you meet the same questions?